Home / 1,437.45-2,157.10-917.83

Finding the Fourth Proportional to 1,437.45, 2,157.10 and 917.83

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Solution

The fourth proportional to 1,437.45, 2,157.10 and 917.83 is: 1,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.45 : 2,157.10 = 917.83 : x
  2. Step 2: Convert to fraction form
    1,437.45/2,157.10 = 917.83/x
  3. Step 3: Cross multiply
    1,437.45x = 2,157.10 × 917.83
  4. Step 4: Simplify right side
    1,437.45x = 1,979,851.49
  5. Step 5: Solve for x
    x = 1,979,851.49/1,437.45
  6. Step 6: Final answer
    x = 1,377.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.